Radioswitch



Nov. 23 1926. 1,608,383

c. GARRABRANT RADIOSWITCH Filed Dec. 21, 1925 2 Sheets-Sheet 1 Nov. 23 1926. 1,608383 c. GARRABRANT RADIOSWITCH Filed Dec. 21, 1925 2 Sheets-Sheet 2 fiar/es Gar/"a hzzn Z.

(1H0: u Q q Patented Nov. 23, 1926 UNITED STATES CHARLES GARRABRANT, OF BROOKLYN, YORK.

RADIOSWITGH.

Application filed December 21, 1925. Serial No. 76,808.

This invention relates to new and useful improvements in radio apparatuses, and particularly to switches therefor.

One object of the invention is to provide a 5 device of this character which automatically controls the radio set, so that said set may be operated at any time desired, without manipulation.

Another object is to provide a device of 1' this character wherein the set will be started at a particular hour of the day or night, in accordance with the operation of a timepiece.

Another object is to provide a means which permits the operation of the set after having 1 been automatically actuated, whereby to proparent from the following vide for manipulation of the dials, to bring in other stations, and to prevent the timepiece from again openingthe circuit.

Other objects and advantages will be apdescription when taken in connection with the accompanying drawings.

In the drawings:

Figure 1 is a top plan view of the unit containing the automatic switch.

Figure 2 1s a vertical transverse sectional view on the hne 22- of Figure 1, showing the switch in rear elevation.

Figure 3,is a side elevation of the clock controlled mechanism and switch, and including, in diagram, the wiring to the set.

Figure 4 is a detail perspective view of the rotary portion of the switch.

Figure 5 is an elevation of the winding and setting controls of the clock.

- Referring particularly to the accompanying drawings, there is shown a unit which includes the loud speaker 10, the clock 11, the plug jacks 12 and 13, and the controlling switch, represented as a whole by the numeral 14.

A radio receiving set, of which a tube socket 15, battery terminal 16, and the plug jack 17, are shown, is adapted to be located at any suitable point with respect tothe above-mentioned unit. Plugs 18 and 19, at

' opposite ends ofthe conductor cord 20, are adapted to be inserted in the jacks 12 and 17 respectively, of the unit and set. I The jack 17 has one terminal connected to the positive binding post of the socket 15, as shown at 22, while the other terminal is connected to the negative B battery post of the terminal 16.

I The winding arbor 24, of the alarm mechanism of the clock 11, is extended through the rear wall of the unit, and is provided with a fingerpiece 28, while the minute hand arbor 25, the winding arbor 26, of the clock, and the alarm setting arbor 27, are also extended through the rear wall of the unit, in position to be manipulated to permit winding and setting of the clock and the alarm mechanism thereof. The arbor 24 is disposed through a vertical insulated post 28, and mounted on this post, above and below the arbor, are the contact members 29 and 30, said contact members being connected, respectively, to the terminals of the jack 12. Secured to the arbor 24, in transversely extending relation thereto, is .a bar 31, and secured at one end to one end of the bar is a leaf spring 32. Mounted above, or on the clock, is .a horizontal pivotal lever 33, one end of which is turned downwardly, at 34, in position to engage the free end of the lea spring the contact ing disposed in tion.

The above mechanism is especially adapted for use in automatically turning on a radio receiving set at a particular time, when a concert, or other message is being broadcast from a station. The owner of the set turns the dials for the particular station, winds the clock, and sets the alarm mechanism to 29, the other end of the lever beposition for ready manipulaoperate at the time at which the station is to broadcast. l Vhen the clock reaches the hour of broadcasting, the alarm arbor 24 will be released so that said arbor; will rotate and cause the free end of the bar 31 to engage with the contact 30, and the free end of the leaf spring 32 to engage with the contact 29. It will be noted that the parts are so arranged and constructed that when the bar 31 engages the contact 30 the other end of the bar will be held in spaced rela- 32, to flex the latter away from.

' a rotatable contact one end of which is adapted to engage with one of the stationary contacts, a flexible member secured to the rotatable contact and arranged to engage its free end with the other stationary contact si multaneously with the engagement of the other end of the rotatable contact with the first-named stationary contact,and means for moving the flexible member out of engagc,

ment with the stationary contact without movement of the rotatable contact.

3. An electric switch including a rotatable shaft, stationary contacts disposed on opposite sides of the shaft, means on the shaft for simultaneous engagement with the contacts upon rotation of the shaft in one direction, and means for disengaging one end.

of the said shaft means without disengagement of the other end thereof.

In testimony whereof, I affix my signature.

CHARLES GARRABRANT. 

